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PubMed1980

Prevalence of juvenile periodontitis in Finland.

The prevalence of juvenile periodontitis was studied in Finland, in an ethnic group representing a uniform Caucasoid population. The study population consisted of the 16-year-old subjects in the county of Uusimaa, population approximately 1,000,000. The screening study was based on the well-organized national dental care service which provides free dental care for all, up to the age of 17. Bitewing radiographs taken of all subjects at the age of 16 were used as the basic material for screening for juvenile periodontitis. Altogether 8,096 pairs of bitewing radiographs were available from the 16-year-old subjects born in 1960-61, representing 56% of the total age group. The radiographs were examined by the author and 28 cases were singled out for thorough clinical and radiographic examination. The following criteria were set for juvenile periodontitis: -- The patient must be in good general health -- Radiographically detectable bone loss more than 2 mm must be demonstrated around more than one tooth -- Local irritants must not be commensurate with the bone loss. Eight cases among the 8,096 subjects fulfilled these criteria giving a prevalence of 0.1%. With 95% confidence this gives an estimate between 0.06 and 0.26%.

Adolescent↗
PubMed1983

Osseous repair in the presence of active tooth hypermobility.

The present investigation was undertaken to evaluate the periodontal response after resolution of inflammation in a situation of established marginal periodontitis, but in the presence of active, continued tooth hypermobility. Periodontitis was induced unilaterally around mandibular second and third bicuspids in 4 squirrel monkeys by tying plaque retentive silk ligatures at the gingival margins. Jiggling trauma to the periodontium between these bicuspids was begun 5 weeks later and continued for the remaining 20 weeks. Ligatures were removed 15 weeks after placement, whereupon regular oral hygiene was begun and continued. Periodontitis and trauma were produced around the corresponding contralateral teeth (control) so that the interproximal area represented the situation immediately prior to ligature removal. Infiltrated connective tissue, loss of connective tissue attachment and alveolar bone, and percentage of bone were determined histometrically for each coronal interproximal periodontium. In control specimens, 58% of the supracrestal tissue was infiltrated with inflammatory cells compared to 19% in experimental specimens. There were no differences in levels of connective tissue attachment or crestal alveolar bone. However, bone repair occurred in the experimental specimens which increased bone volume from 11 to 18% (P less than 0.05). It was concluded that osseous repair occurred in the presence of active, continued tooth hypermobility after resolution of inflammation.

Alveolar Process↗
PubMed1986

The combined effects of plaque and physical stress on periodontal tissues.

Experiments have been performed in beagle dogs in attempts to evaluate the effect of orthodontic- and jiggling-type trauma on the supporting structures of premolars. The results reported have unanimously demonstrated that in situations where orthodontic or jiggling forces were inflicted on teeth with a normal periodontium, or on teeth with overt signs of gingivitis, the periodontal ligament tissue reacted by transitory signs of inflammation. These phenomena occurred without a concomitant loss of connective tissue attachment and development of pathologically deepened periodontal pockets. If the jiggling trauma was inflicted on teeth with an ongoing plaque-associated, destructive periodontitis, the resulting inflammatory reactions caused enhanced loss of attachment and angular bony defects. Furthermore, orthodontic tilting movements of teeth (intrusion) in a plaque-infected dentition may shift a supragingivally located plaque into a subgingival position resulting in periodontal tissue breakdown.

Animals↗
PubMed1991

The microflora of periodontal sites showing active destructive progression.

20 adult periodontitis (AP) subjects were examined every 2 to 4 months and microbiological samples were collected and cultured when 2 mm or more loss of attachment (active sites) was detected by 2 examiners. Similar sites in which no progressive destruction was observed (control sites) also were sampled in the same subjects. By lambda-analysis, there was no statistically significant difference in floras of active (42 sites from 12 subjects) and control (36 sites from 12 subjects) sites or between the floras of the active and control sites and of 63 samples from 22 AP subjects that were examined previously in a cross-sectional study. By paired t test, no microbial species had a significantly greater association with active than with control sites. The only species that were detected in one or more samples from all subjects with active sites were Wolinella recta, Fusobacterium nucleatum, and Peptostreptococcus micros. Porphyromonas gingivalis and 9 other taxa were isolated from one-half or more of the persons with active sites. The composition of microbiological floras of all periodontitis samples was statistically significantly different from that of subjects with healthy gingiva. The composition of microfloras of sites in subjects with naturally-occurring gingivitis was intermediate between that of subjects with healthy gingiva and that of active and control sites in AP subjects.

Adult↗
PubMed1994

Effects of denture-wearing habits on periodontal health of abutment teeth in patients with overdentures.

The effect of denture-wearing habits was studied in 31 overdenture wearers (17 day-and-night wearers, 14 day wearers) during a period of 5 years with controlled oral hygiene. Prior to prosthetic treatment, intensive instruction and motivation in oral hygiene were carried out and the patients were recalled 2-4 x yearly during the study period. Before treatment, mean plaque index (PlI) and gingival index (GI) were 1.5 and 1.6, respectively, in both groups of patients. During the study period, mean PlI and GI were 0.3-0.6 and 0.6-0.8, respectively, in the group of day wearers and 0.5-1.0 and 1.0-1.2, respectively, in the group of day-and-night wearers. With regard to the GI, this difference was statistically significant. Furthermore, during the study period, 20% of the abutment tooth surfaces showed attachment loss (1-4 mm) in the group of day-and-night wearers against 8% of the tooth surfaces in the group of day wearers. This difference was statistically significant. During the 5 years, 40 carious lesions developed in the group of day-and-night wearers against 3 in the group of day wearers. The results of this study have shown that day-and-night wearing of dentures is a major periodontitis and caries risk factor in complete overdenture wearers with controlled oral hygiene.

Aged↗
PubMed1995

The periodontal ligament of teeth connected to osseointegrated implants. An experimental study in the beagle dog.

The aim of the present investigation was to analyze the periodontal tissues at immobilized teeth connected to osseointegrated implants. 10, 1-year old beagle dogs, were used. Bilaterally, the mandibular 2nd (2P2) and 3rd premolars (3P3) and 1st molars (1M1) were extracted. 2 titanium fixtures were installed in the edentulous segment of the right side of the mandible, one about 10 mm mesial and the other about 10 mm distal to 4P (test tooth). 3 months later, abutment connection was performed and healing allowed for one month. The dogs were randomly divided into 2 groups of 5 each, group A and group B. In group A, a fixed gold splint, rigidly connecting the tooth and the 2 implants, was installed on day 0 and 4P was hereby immobilized. The controlateral 4th premolar (P4) served as the non-splinted control tooth. Plaque control measures continued until the end of the experiment (day 180). In group B, plaque control measures were abandoned 1 month after abutment connection and a 4- month period of experimental periodontal tissue breakdown was initiated. This was accomplished by placing cotton floss ligatures submarginally around 4P and P4. At the end of this 4-month period, the ligatures were removed, and an apically positioned flap procedure was performed. Healing was allowed for another 2 months. Plaque control measures were re-established and continued throughout the experiment. A given day was termed day 0 and 4P was rigidly connected to the adjacent implants in the manner described for group A.(ABSTRACT TRUNCATED AT 250 WORDS)

Alveolar Process↗
PubMed1995

Antibody responses to suspected periodontal pathogens in elderly subjects with periodontal disease.

Little is known about the relationship of aging to periodontal disease. The immune response undergoes aging-related changes resulting in loss of functional capacity. The aim of this study was to investigate the relationship between levels of serum IgG antibodies against suspected periodontal pathogenic microorganisms to the presence or absence of periodontal disease in an elderly (65-75 yrs) population. From this study, we obtained information concerning: (1) the ability to differentiate elderly individuals without disease from those with disease by their levels of antibodies against periodontal pathogens and (2) which periodontal pathogen(s) triggered those responses. IgG anti- Porphyromonas gingivalis (strains W83 and 381) levels in the serum of elderly patients with severe periodontal disease were the only antibody responses measured which were elevated compared to the elderly control group of subjects with no periodontal disease. Anti- Prevotella intermedia IgG levels in both elderly patient groups were depressed compared to anti- P. intermedia levels in the young normal control subjects. Serum IgG antibody levels to six other plaque microorganisms did not differentiate between diseased and normal, elderly or young subjects. This data suggested that P. gingivalis was associated with periodontal disease in this elderly group of individuals and that those elderly individuals were able to respond with a normal IgG immune response.

Adult↗
PubMed1996

Papillon-Lefèvre syndrome. Analysis of peripheral blood lymphocyte subsets.

We have studied the peripheral blood lymphocyte populations in our 6 patients (2 female and 4 male) with a mean age of 11.19 with Papillon-Lèfevre Syndrome (PLS) using adequate monoclonal antibodies and double coloured flow cytometry. Total B, T, CD4, CD8, CD29, CD45RA, NK, HLA-DR cells were studied. Total B, T, CD4 and CD8 lymphocytes were within normal limits. We have observed an increase in the CD29 lymphocytes and NK cells and a decrease in CD45RA lymphocytes. We think that these findings are important in explaining B lymphocyte activation and in the pathogenesis of the PLS.

Alveolar Bone Loss↗
PubMed1996

Peripheral blood leukocyte populations in the elderly with and without periodontal disease.

Periodontal disease in the elderly has not been characterized. Initial reports suggest that the disease is common and severe. Deficiencies in the immune response have also been reported to occur in the elderly. Consequently it was hypothesized that aging-related changes in the immune response may contribute to the severity and occurrence of periodontal disease in the elderly. To test that hypothesis, the % and number of leukocytes and leukocyte subsets in the peripheral blood of elderly (65-75 years) subjects were tested and used as indicators of the immune potential of those individuals. Age and gender effects on several of the parameters tested were identified. With the exception of increased number of leukocytes in the elderly group with severe periodontal disease, no other alteration in the leukocyte parameters tested were identified. These results suggest that periodontal disease in the elderly was not associated with obvious changes in the leukocyte and leukocyte subsets in the peripheral blood due to aging.

Adult↗
PubMed2004

Impact of oral health on the life quality of periodontal patients.

OBJECTIVES: To assess the impact of oral health on the life quality of a periodontal patient group. MATERIALS AND METHODS: Two hundred and five patients attending a private periodontal clinic completed a questionnaire incorporating the 16-item UK oral health-related quality-of-life measure (OHQoL-UK), a check list of questions about their periodontal health over the past year and a comprehensive periodontal examination. RESULTS: The effect of oral health on quality of life was considerable, with many individuals experiencing negative impacts across a broad range of physical, social and psychological aspects of life quality. OHQoL-UK(Copyright ) scores was associated with patient's self-reported periodontal health in the past year: experiences of "swollen gums" (p<0.01), "sore gums" (p<0.01), "receding gums" (p<0.01), "loose teeth" (p<0.01), "drifting teeth" (p<0.01), "bad breath" (p<0.01) and "toothache" (p<0.01). In addition, OHQoL-UK scores were correlated with the number of teeth with pocket depths of 5 mm or more (r(s)-0.42, p<0.01). New patients had poorer oral health-related quality of life compared with the treated maintenance group (p<0.01). CONCLUSIONS: Periodontal status impacts on life quality. This has implications in understanding the consequences of periodontal health and in the use of patient-centred outcomes in periodontal research.

Affect↗
PubMed1975

Dental status of the institutionalized elderly population of Edinburgh.

A randomly selected population of 442 persons in Edinburgh was interviewed and examined. Although 71 % of the sample required treatment, only 52 % were physically and mentally able to benefit from treatment. Thirty percent of the sample were able to use public transport to attend a dentist, 66 % would require cars and ambulance transport and 4 % were bedridden and would require domiciliary dental services. Twenty-one percent of the sample had thought about seeking dental treatment, while only 25 % had heard how to claim exemption from or help towards dental charges. Edentulousness was present in 91 % of the sample, only 41 persons having remaining natural teeth. Seventy-three percent were wearing dentures which required adjustment or replacement, but only 39 % thought their dentures were unsatisfactory. In 58 % of the patients the oral tissues were so deformed or resorbed that the prosthodontic treatment needed would be complex and require special skills. Half of the sample had some form of denture-induced pathology which required either conservative or surgical treatment.

Age Factors↗
PubMed1990

Dental treatment demands among patients in Tanzania.

The dental treatment demands of 824 patients attending regional dental clinics were recorded. Overall 86% of the patients sought treatment for pain, ranging from 77% to 97% in the different clinics. Caries was the main cause of pain. The proportion of patients with demands for aesthetics was 5%, prosthetics 2%, and check up 3%. The data indicated a need for emergency care. The type of curative treatment needed, mainly extractions, could well be performed by dental auxiliaries. Since the data was collected from patients among whom many visited the clinics in the late stages of painful oral diseases, it is assumed that it reflects only the tip of an iceberg that represents a much larger dormant demand (want) for emergency care among the population. Any strategy aiming to be effective in improving oral health should at least meet the emergency dental needs of the population. Consequently there is a definite need of data on dental treatment demands and wants for adequate planning of dental health care systems in their infancy in countries with limited financial resources.

Adolescent↗
PubMed1990

Consumer product-related tooth injuries treated in hospital emergency rooms: United States, 1979-87.

The database of the National Electronic Injury Surveillance System was used to analyze episodes of consumer product-related traumatic injuries to teeth treated in hospital emergency room in the United States from 1979 through 1987. Results showed a slight but consistent increase in episodes of such injuries during this 9-yr period. Over 75% of such episodes occurred in persons under 15 yr of age. Over 60% of the tooth injuries in such episodes could be crudely classified into the following types by descending rank order: avulsed-, broken-, loosened-, chipped-, intruded-teeth and soft tissue injuries. The most common categories of consumer products and activities associated with such episodes were sports and play, followed by falls on floors, stairs or showers, and bicycles and other wheeled vehicles. The age composition of specific episodes of dental injuries varied considerably for different products and activities, suggesting a need for specific strategies for prevention of episodes of consumer product-related injuries to teeth for different age categories of the population.

Adolescent↗
PubMed1992

Prognosis of overdenture abutments in the aged: effect of denture wearing habits.

The effect of denture wearing habits was studied in 35 overdenture wearers (20 day-and-night wearers, 15 day-wearers) during a period of 3 yr with controlled oral hygiene. Prior to prosthetic treatment intensive instruction and motivation in oral hygiene were carried out and the patients were recalled 2-4 times yearly during the study period. Before treatment mean Plaque Index (PlI) and Gingival Index (GI) were 1.5 and 1.6, respectively, in both groups of patients. At day 0, 1 yr, 2 yr and 3 yr mean PlI and GI were 0.3-0.5 and 0.6-0.8, respectively, in the group of day-wearers and 0.5-1.0 and 1.0-1.2, respectively, in the group of day-and-night wearers. This difference was statistically significant. Furthermore, during the study period 16% of the abutment tooth surfaces showed attachment loss (1-4 mm) in the group of day-and-night wearers against 7% of the tooth surfaces in the group of day-wearers. This difference was statistically significant. During the 3 yr 36 carious lesions developed in the group of day-and-night wearers, but none in the group of day-wearers. The results of this study have shown that day-and-night wearing of dentures is a major periodontitis and caries risk factor in complete overdenture wearers with controlled oral hygiene.

Aged↗
PubMed2006

Oral health-related quality of life and periodontal status.

BACKGROUND: As patient-centered approaches become more popular, increasing attention is being given to assess the effects of various human health situations on an individual's overall quality of life (QoL). Measures have been used in dentistry to study the effects of orthodontic treatment and oral surgery, but so far little has been reported about the effects of periodontal disease. OBJECTIVE: This study assessed the impact of periodontal health status on QoL. METHODS: A subsample of 767 subjects were selected from a community study (n=1000) which investigated the association between psychological factors and clinical periodontal attachment level (CAL). The sample included subjects with full-mouth mean CAL 3 mm (high/severe periodontal attachment loss group). The subjects were requested to complete the Chinese short-form version of Oral Health Impact Profile (OHIP-14S) and a checklist of self-reported periodontal symptoms during the previous 12 months. RESULTS: A total of 727 subjects (95%) completed the questionnaire. The OHIP-14S and subscale scores were significantly associated with six of seven of the self-reported periodontal symptoms. A comparison of the mean OHIP-14S scores of the healthy/low and the high/severe periodontal attachment loss groups revealed significant differences in respect of the subscales of functional limitation, physical pain, psychological discomfort, physical and psychological disabilities. CONCLUSION: This study demonstrates a significant association between oral health-related QoL and periodontal disease.

Adult↗
PubMed1989

Dental and jaw changes in primary hyperoxaluria.

A case of teeth and jaw changes in primary hyperoxaluria is described. The patient, a 25-yr-old man, was treated by kidney transplantation twice, and finally by combined liver and kidney transplantation. The teeth and jaw changes consisted of deposition of oxalate crystals in the gingiva, in the pulp and in the vicinity of bone and dentin. The resorption of bone and dentin was extensive.

Adult↗